A psychological typology and its relationship to entrepreneurial success

This research indicates that typologies covering multiple types of entrepreneurs are applicable within the realm of entrepreneurial personality. Four such personality types - personal achievers, real managers, expert idea generators, and empathic supersalespeople - are identified, and shown to be related to subsequent entrepreneurial success. The evidence indicates that entrepreneurial talent may be gauged in terms of the number of these patterns present in a given individual. Those with more patterns are more likely to achieve a substantial level of success. These results have implications for anyone whose work touches upon the field of entrepreneurship. This paper is concerned primarily with how the typology was developed and how the relationship of each type to entrepreneurial success was established. The career routes that fit each type (and which must be followed to obtain success) are considered.     

Comparing risk aversion in a probability triangle

An agent's acceptance set consists of the probability distributions preferred to the status quo. One agent is more risk averse than another if the more risk averse agent's acceptance set is a proper subset of the less risk averse agent's acceptance set. An agent's odds premium expresses the odds in favor of winning the largest cash prize in a lottery over the best and worst alternatives that is indifferent to the the agent's initial wealth. Comparisons of two agents odds premia completely characterizes the risk aversion relations between them when facing lotteries in a probability triangle. The result applies to expected utility and some non-expected utility theories. Received: December 30, 1998; revised version: February 10, 1999     

On the difficulty of combining actual and potential criteria for an increase in social welfare

Summary. This paper examines two problems associated with the use of potential Pareto criteria in welfare economics. The first problem is the well-known intransitivity of the compensation criteria à la Kaldor-Hicks-Scitovsky. The second problem is the possible incompatibility between the Chipman-Moore-Samuelson criterion and the Pareto principle. The main result of this paper is that, in order to avoid either of these problems, it is necessary and sufficient that the domain to which these criteria are used is such that the Chipman-Moore-Samuelson criterion encompasses completely the Pareto criterion. When interpreted in a standard economic environment, this result is shown to be equivalent to Gorman's requirement of non-crossing between utility possibility frontiers. Received: June 18, 1998; revised version: March 2, 2000     

城市定位的理论思考与案例研究——以太原市为例

城市定位是在社会经济发展的坐标系中综合地确定城市坐标的过程。文章首先讨论了城市定位的主导因素和基本要素，提出了城市定位的综合集成思路。接着，以太愿为例，对城市定位问题进行了案例研究。文章以城市定位的逻辑判定和科学分析为基础，通过对可选方案的优劣对比分析，最终遴选出太原城市定位的综合性方案。     

Perspectives on Michael A. Bernstein's A Perilous Progress: Economists and Public Purpose in Twentieth-Century America *

The article compares Joseph Schumpeter's well-known perspectives of long term economic development with those put forward in the 1920's by the German economist Werner Sombart who followed an approach of ‘theoretical historicism’. There was general agreement between Schumpeter and Sombart that capitalism as an economic system was on the decline. Whereas according to Sombart this was attributable to a tendancy towards stagnation; in Schumpeter's view capitalism was doomed due to its success, not for its failure. The strongest parallels are to be found with respect to forces driving the transformation process, at the end of which Schumpeter expected a socialist system whereas Sombart envisioned some kind of mixed economy. The article also discusses the relevance of differences of approaches and of value judgments for the results of both authors' investigations.     

A visualization tool for exploratory analysis of cyclic multivariate data

This paper presents an interactive visualization tool for the qualitative exploration of multivariate data that may exhibit cyclic or periodic behavior. Glyphs are used to encode each multivariate data point, and linear, stacked, and spiral glyph layouts are employed to help convey both intra-cycle and inter-cycle relationships within the data. Users may interactively select glyph and layout types, modify cycle lengths and the number of cycles to display, and select the specific data dimensions to be included. We validate the usefulness of the system with case studies and describe our future plans for expanding the system's capabilities.     

A proposed set of nine regions for the United States and the inequality of population densities

A nine-region division of the United States is discussed and compared with the U.S. Census and BEA (Bureau of Economic Analysis) regional groupings. The discussion includes the population density of the regions as well as the inequality of the population densities between and within regions. First version received: October 1999/Final version received: February 2000     

Is it efficient to analyse efficiency rankings?

When production functions are estimated as frontier functions, the deviations from the frontier can be interpreted as individual inefficiency estimates. Unfortunately, it has recently been shown that efficiency differences across individuals are very often statistically insignificant. In this paper, we will analyse the consequences of the consideration of confidence statements for the reliability of efficiency rankings. The stochastic frontier and confidence intervals derived by Horrace and Schmidt are compared to the COLS approach and bootstrap confidence intervals. The membership function is proposed as a simple Monte-Carlo approximation for the probability for an individual to be the most efficient in the sample. First version received: May 1998/final version accepted: July 1999     

Determination of uniformly most powerful tests in discrete sample spaces

Uniformly most powerful (UMP) tests are known to exist in one-parameter exponential families when the hypothesis H ₀ and the alternative hypothesis H ₁ are given by (i) H ₀ : θ≤θ₀, H ₁ : θ>θ₀, and (ii) H ₀ : θ≤θ₁ or θ≥θ₂, H ₁ : θ₁<θ<θ₂, where θ₁<θ₂.  Likewise, uniformly most powerful unbiased (UMPU) tests do exist when the hypotheses H ₀ and H ₁ take the form (iii) H ₀ : θ₁≤θ≤θ₂, H ₁ : θ<θ₁ or θ>θ₂, where θ₁<θ₂, and (iv) H ₀ : θ=θ₀, H ₁:θ≠θ₀.  To determine tests in case (i), only one critical value c and one randomization constant γ have to be computed. In cases (ii) through (iv) tests are determined by two critical values c ₁, c ₂ and two randomization constants γ₁, γ₂. Unlike determination of tests in case (i), computation of critical values and randomization constants in the remaining cases is rather difficult, unless distributions are symmetric. No straightforward method to determine two-sided UMP tests in discrete sample spaces seems to be known. The purpose of this note is to disclose a distribution independent principle for the determination of UMP tests in cases (ii) through (iv). Received: March 1999     

谈职业教育中《现代物流》课程教学

对《现代物流学》的教学研究是为了提高课堂上的学习效率,提升学生的学习兴趣。通过从课程设计、教学方法和手段的选择、教学模式的革新等几个方面的讨论,希望为相关的教学提供一定的建议。